Commit dd797738 authored Apr 05, 2011 by Benjamin Herrenschmidt

powerpc: Perform an isync to synchronize CPUs coming out of secondary_hold



We need to do that to guarantee they see any code change done by
dynamic patching during boot.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

parent 948cf67c

arch/powerpc/kernel/head_64.S

+2 −0

Original line number	Diff line number	Diff line
		@@ -147,6 +147,8 @@ __secondary_hold:
		mtctr r4
		mr r3,r24
		li r4,0
		/* Make sure that patched code is visible */
		isync
		bctr
		#else
		BUG_OPCODE